Abstract: The embodiments described herein describe technologies for non-volatile memory persistence in a multi-tiered memory system including two or more memory technologies for volatile memory and non-volatile memory.

Abstract: Computer file copy systems and methods in which a list of files to be transferred from storage on a source file storage computer is sorted by one or more processors of a copy computer in ascending order from a smallest file size to a largest file size. Thereafter, files having the smallest file sizes are selected from the sorted files such that a total size of the selected files is equal to or less than a total size of memory available on the copy computer, the selected files are copied concurrently with one another from storage on the source file storage computer to the available copy computer memory by the one or more processors, the files are written concurrently with one another from the memory on the copy computer to storage on a target file storage computer by the one or more processors, and the process is performed iteratively.

Abstract: A method of multitasked operation of a data storage node includes executing provider threads of an application, the provider threads distributed among processing cores along with respective peek-poller threads, each provider thread having regular operations of (1) continually polling interfaces of the data storage node for application events requiring processing, and (2) performing processing tasks for the application events until there are no unprocessed additional events for the provider thread, and thereupon entering a sleep state. The method further includes regularly executing the peek-poller threads on the processing cores, each peek-poller thread having operations of (1) checking interfaces of the data storage node for new application events to be processed by respective provider threads currently in the sleep state, and (2) for each new application event, activating the respective provider thread on the respective processing core.

Abstract: Technologies are provided for reducing or eliminating transaction consistency anomalies that can occur during data replication, such as during database table replication. For example, commit values can be used to coordinate requests so that the requests are not performed on database tables with inconsistent data.

Abstract: Provided are a computer program product, system, and method for using alternate recovery actions for initial recovery actions in a computing system. An initial recovery table provides initial recovery actions to perform for errors detected in the computing system. An alternate recovery table is received including at least one alternate recovery action for at least one of the initial recovery actions. An alternative recovery action provided for an initial recovery action specifies a different recovery path involving at least one of a different action and a different component in the computing system than involved in the initial recovery action. A determination is made as to whether to use the initial recovery action in the initial recovery table for a detected error or the alternate recovery action in the alternate recovery table. The determined initial recovery action or alternate recovery action determined is used to address the detected error.

Abstract: Processing for a file system may include determining an inconsistency between a data log and inodes (index nodes) of the file system. Responsive to determining the inconsistency, recovery processing may be performed including first processing of the data log, second processing of the inodes of the file system, and third processing of the data log after said second processing. First processing may, for each entry of the data log that records a create snapshot operation to create a snapshot of a file having an associated inode of the file system that is a dirty snapshot inode, marking the associated inode as “snap validated”. Second processing may include freeing each dirty snapshot inode not marked as “snap validated”. Third processing may include freeing any entry of the data log where the entry references dirty snapshot inode freed by the second processing.

Abstract: Provided is an environment for executing an application program included in a task to be periodically executed every fixed task cycle within a predetermined task cycle. A method includes: receiving input of a source code of the application program, and generating an execution module of the application program by adding, to the source code of the application program, a first command for interrupting the application program after executing the application program for a preset time within the task cycle and resuming execution of the application program in the next task cycle.

Abstract: Systems and methods associated with generating and/or maintaining resilient versions of application data usable by operationally distinct clusters are disclosed. In one embodiment, an exemplary method may comprise operating plural instances of a software application in a first cluster and a second cluster, assessing requirements of streaming architecture of both clusters that impact the instances' ability to process application data, creating at least two versions of the application including a main version in one cluster and a replica version for an operationally distinct cluster, automatically mirroring, in real time, replica versions of the application data from each cluster into a distinct cluster for access and use by the software instance in the distinct cluster, and locally storing indexes for main and replica versions and all data that the software application requires to provide consistent responses in all of the operationally distinct clusters.

Abstract: A system for restoring purged data includes an input interface and a processor. The input interface to receive an indication of purged data to restore. The processor is to reinstate the purged data using a stored copy and rebuild one or more relations to the purged data using an effective change stack.

Abstract: An approach for providing flexible durability operations for a data storage application can include requests to perform logging operations of data storage application having an indication of a durability mode to use for the logging operation. The logging operation can be initiated according to the indication of the durability mode and a callback indicating log write completion can be called according to the indication of the durability mode.

Abstract: An apparatus for monitoring file access in a virtual machine in a cloud-computing system based on a virtualized environment includes a hypervisor for implementing at least one virtual machine and managing the virtual machine by monitoring a task in which a the virtual machine accesses a file loaded from storage to memory, the storage storing data including environment information of the virtual machine.

Abstract: A cloud storage server accesses a plurality of server-stored files of a cloud storage account of a client device and determines that one or more compromised server-stored files from the plurality of server-stored files are affected by a malware activity. The cloud storage server determines a plurality of recovery options based on an identification of the one or more compromised server-stored files and the time at which changes to the one or more compromised server-stored files became affected by the malware activity. The plurality of recovery options comprises a suggested restore point identifying a restore time to which changes to the one or more compromised server-stored files are reverted. The cloud storage server transmits a recovery notification that indicates the plurality of recovery options to the client device.

Abstract: Generally described, one or more aspects of the present application correspond to techniques for new block store volumes of data from object storage snapshots of an origin volume by creating an intermediary “acceleration pool” of source volumes reserved for supporting the new volume creation process. The source volumes may be prevented from supporting user I/O or computing instances in order to reserve their bandwidth for the transfer of data to the new volumes. In addition, the source volumes can be stored on block store servers to increase the speed with which their data can be transferred to the new volumes. The acceleration pool can be partitioned among users accessing the pool in order to maintain availability even when some users heavily utilize the acceleration pool, with particular source volumes intelligently selected from among a user's partition in order to optimize the speed at which the new volumes are created.

Abstract: Technologies for performing dynamic configurations to a transmit scheduler of a network device with minimal downtime are disclosed. The transmit scheduler includes a topology of scheduling nodes. The transmit scheduler identifies, from a number of configuration operations to be executed on one or more of the scheduling nodes, one or more first configuration operations to be executed while the scheduling nodes are active, one or more second configuration operations to be executed while the scheduling nodes are inactive, and one or more third configuration operations to be executed via a cache. The first operations are executed as part of a background process. The second operations are executed while the scheduling nodes are inactive. The third operations are executed via the cache.

Abstract: The disclosure relates to an orchestrator, for a Virtual Network Platform as a Service (VNPaaS), which orchestrates the management of a Network Service (NS). The orchestrator is operative to select an orchestration zone for each of a plurality of Virtual Network Functions (VNFs) in the NS based on selected deployment locations, where each orchestration zone comprises at least one VNF. The orchestrator is operative to associate sub-services to the selected orchestration zones, the sub-services being obtained from a decomposition of the NS into a number of sub-services equal to a number of orchestration zones selected and each sub-service comprising at least one of the plurality of VNFs. The orchestrator is operative to initiate deployment of the sub-services in the selected orchestration zones.

Abstract: A set of processors in a symmetric multiprocessor (SMP) system are deconfigured following a first failed processor to return the SMP system to a symmetric state. One or more deconfiguration options are identified, and a respective cost is calculated for each deconfiguration option. A deconfiguration option is selected and applied to the SMP system based on the respective costs of the one or more identified deconfiguration options.

Abstract: A method for execution by one or more processing modules of one or more computing devices of a dispersed storage network (DSN), the method begins by detecting a failure (partial or full) of a dispersed storage (DS) unit memory device within the DSN. The method continues by tracking namespace ranges of encoded data slices intended for access in the failed DS unit memory device. The method continues by redirecting access of the encoded data slices reflected by the namespace ranges from the failed DS unit memory device to a failover DS unit memory device.

Abstract: Systems and methods are described that facilitate idempotent execution of commands generated by a client for execution by a database server. Each command transmitted to the server includes a command ID generated by the client. The server attempts to execute each command and subsequently stores the command ID associated therewith in a repository along with an indication of whether the command executed successfully. When a new command is received by the server, it determines if the command ID associated therewith has already been stored in the repository. If the command ID associated with the new command has not already been stored in the repository, then the server executes the new command. If the command ID associated with the new command has already been stored in the repository and a previously-received command associated with the command ID has been executed successfully, then the server will not execute the new command.

Abstract: In one aspect, minimization of recovery time after a high availability (HA) event in a storage system is provided. An aspect includes creating, during an active replication session, mini replication session MOM objects from replication session-related configuration information of the active replication session, and creating mini volume objects for volumes of the active replication session, Upon determining an occurrence of the HA corresponding to the data module, an aspect includes reconfiguring the mini replication session MOM objects and the mini volume objects prior to activation of the data module and prior to enabling input/output (TO) servicing by the data module. An aspect further includes performing non-replication IO-related configuration for the data module and, upon completion of the non-replication IO-related configuration, enabling the IO servicing by the data module.

Abstract: A read operation can be received while one or more program operations are being performed at a memory sub-system. In response to receiving the read operation, the one or more program operations being performed at the memory sub-system can be interrupted. Context data associated with the one or more interrupted program operations can be determined and the context data can be provided to a firmware associated with the memory sub-system. A control sequence can be received from the firmware based on the context data. The read operation can be performed and the one or more interrupted program operations can be resumed based on the control sequence from the firmware.

Abstract: A method and corresponding system are described for monitoring a first node in a communications network by a second node, where the first node has a single-channel design and is designed to execute a safety-oriented application. The second node has a dual-channel design, and a safety protocol is used for a data transfer between the first and second node. The second node determines at each of two consecutive time points a time value based on an internal timer, and sends each determined time value to the first node. The first node in response to each receipt of the time values determines a further time value based on a further internal timer. The first node compares a difference between the two time values from the second node with a difference between the two further time values from the first node, and goes into an error state depending on the comparison.

Abstract: A platform and method for content management is disclosed. A content right management method includes receiving contents from a user, and generating a create key for a right for the contents by encrypting the contents using encryption information, in which the create key includes a copyright of the contents and a creation right of the contents.

Abstract: Disclosed herein are embodiments of a network monitoring device for a supercomputer system having a plurality of supercomputer nodes. The network monitoring device may utilize plug-in software modules to provide network monitoring capabilities related to discovering the network topologies of the supercomputer system, determining network and computing resources that are available for new applications in the supercomputer system, collecting network and computing resources that are being used by running software applications in the supercomputer system, and monitoring running software applications on the supercomputer system.

Abstract: In various embodiments, methods and systems for implementing a device management system with a restore prevention utility are provided. A request is received, at a control server, for an installation file for a restore prevention application. Based on receiving the request, the control server circumvents communication of the installation file based on transmitting a response code. The response code is an informational code that operates as an indicator to wait for a final response. Transmitting the response code triggers maintaining a pending state for the restore prevention application at the controlled device.

Abstract: Unavoidable physical phenomena, such as an alpha particle strikes, can cause soft errors in integrated circuits. Materials that emit alpha particles are ubiquitous, and higher energy cosmic particles penetrate the atmosphere and also cause soft errors. Some soft errors have no consequence, but others can cause an integrated circuit to malfunction. In some applications (e.g. driverless cars), proper operation of integrated circuits is critical to human life and safety. To minimize or eliminate the likelihood of a soft error becoming a serious malfunction, detailed assessment of individual potential soft errors and subsequent processor behavior is necessary. Embodiments of the present disclosure facilitate emulating a plurality of different, specific soft errors. Resilience may be assessed over the plurality of soft errors and application code may be advantageously engineered to improve resilience.

Abstract: Systems and methods for asserting the initialization status of a virtualized system. An example method comprises: specifying, by a virtualization manager, configuration settings of a virtual machine instance, wherein the configuration settings comprise a callback address and an identifier of the virtual machine instance; causing a host computer system to boot the virtual machine instance using the configuration settings; receiving, at the callback address, a notification comprising the identifier of the virtual machine; and determining, in view of the notification, an initialization status of the virtual machine instance.

Abstract: A data store may implement on-demand data schema modifications. Request to change a schema for a data set in a data store may be received and a description of the change recorded as part of a schema history for the data set. The request to change the schema may then be acknowledged. When access requests directed to the data set are received at the data store, the schema history for the data set may be evaluated. If the schema history indicates that data that is to be accessed in order to service the data store needs to include one or more changes in the schema history, then a version of the schema that includes the one or more changes may be applied to the data.

Abstract: A message broker computer includes a master broker, a plurality of slave message brokers and event stores. A client system sends messages for processing to the master broker. The master broker generates a message event in response to receiving such a message, and distributes the message event in parallel to the slave brokers and the event stores. Each of the event stores store the message event in persistent storage, and notifies the master broker that the message event has been persisted. The master broker considers the message stabilized n a quorum of the event stores. As the master broker does not take action until a messaging event is stabilized, in the event of failover, a new master broker is able to re-construct a broker state of the old master with no loss of data.

Abstract: A method includes transmitting a command signal including a time-out time from a host to a storage device; determining, by the storage device, a first time amount, which is an amount of time required for the storage device to perform an operation corresponding to the command signal; when the first time amount is not greater than the time-out time, providing a first response signal including a success flag from the storage device to the host after the storage device performs the operation within the time-out time; when the first time amount is longer than the time-out time, providing a second response signal including the first time amount and a time-out reset flag from the storage device to the host; and when the host receives the second response signal, retransmitting the command signal to the storage device after the host resets the time-out time to the first time amount.

Abstract: An application health monitoring system automatically resolves anomalies arising among clients of a messaging server. The messaging server clients (MSCs) include one or more applications and services included in the applications. The anomalies include MSC anomalies and process starter anomalies. When a messaging session is disconnected due to server restarts, the service may be automatically restarted a predetermined number of times to re-establish the connection. Similarly, if a process starter of a service fails to start up properly, the service can be automatically restarted a predetermined number of times before the anomaly is flagged for human review. The monitoring system also automatically implements rules whenever service configurations are changed in addition to validating web service ports and cloud provider queues.

Abstract: A semiconductor memory device includes a memory array including a plurality of memory blocks, an address allocation information storage unit which stores address allocation information, a block selection circuit which selects one memory block which corresponds to an input address which is input on the basis of the address allocation information and a refresh control circuit which controls a refreshing operation. One of the memory blocks is allotted to a surplus memory block. The refresh control circuit transfers data which is stored in one memory block which is a refreshing object to the surplus memory block and thereafter allocates address information of the memory block which was the refreshing object to the surplus memory block to which the data is transferred and newly allots the memory block which was the refreshing object to the surplus memory block.

Abstract: Techniques for data backup and restoration are disclosed. In one embodiment, the techniques may be realized as a method including generating a first backup representing a database at a first time; after the first backup, generating a plurality of journal entries, each journal entry representing a change to the database made after the first time; and restoring the database from the first backup and the plurality of journal entries, the restored database including the changes represented by the entries.

Abstract: Facility for providing backup and restore of all data center components including physical machines, virtual machines, routers, networks, sub-networks, switches, firewall, directory lookup, DNS, DHCP and internet access. Virtual or physical machines are associated to data center components and a software defined network, storage, and compute infrastructure is provided.

Abstract: An illustrative embodiment includes a method for checkpointing and restarting an application executing at least in part on one or more central processing units coupled to one or more hardware accelerators. The method comprises checkpointing the application at least in part by: transferring checkpoint data of the application to the one or more hardware accelerators; performing distributed compression of the application checkpoint data at least in part using the one or more hardware accelerators; and writing the compressed application checkpoint data to a storage device. The method further comprises restarting the application at least in part by: reading the compressed application checkpoint data from the storage device; transferring the compressed checkpoint data to one or more hardware accelerators; and performing distributed decompression of the application checkpoint data at least in part using said one or more hardware accelerators.

Abstract: A method for recovering content stored in virtual machines is provided. This method includes isolating a data object to be recovered from a crash or error from incoming and outstanding processes; backing out uncommitted changes of the data object based on undo logs; determining a most recent checkpoint for the data object; reinitializing the data object from the most recent checkpoint to produce a reinitialized data object; and populating the reinitialized data object to produce a recovered data object by replaying, from a write-ahead log.

Abstract: Electronic communications passing through a communication gateway or similar device for an enterprise can be monitored for indicators of malicious activity. When potentially malicious activity is identified, a user-based inquiry can be employed to identify potential sources of the malicious activity within the enterprise network. More specifically, by identifying a user that sourced the communication, instead of or in addition to a network address, devices within the enterprise network associated with the user can be located, analyzed, and remediated as appropriate.

Abstract: Described embodiments provide systems and methods for providing closed-loop Information Technology (IT) issue remediation. At least one host state change is discovered. Events to be generated and persisted as a result of discovering the at least one host state change are calculated. The events are sent to a user for approval by the user or to be declined by the user. For each event one of an approval of the event or a rejection of the event is received. A workflow is executed for the approval or rejection of the event.

Abstract: A system for preforming mid-method instrumentation includes a processor; a memory; and one or more modules stored in the memory and executable by a processor to perform operations including: obtain bytecode representation of an application; identify a method in the bytecode including a beginning and an end of the method; identify lines of bytecode between the beginning and the end of the identified method; identify one or more of the lines of bytecode between the beginning and the end of the method to instrument with one or more interceptors; during runtime of the application, instrument the identified one or more of the lines of bytecode between the beginning and the end of the identified method by apply the one or more interceptors; and during the runtime of the application, receive information associated with the instrumented one or more lines of bytecode between the beginning and the end of the method.

Abstract: Examples relate to a method for a memory module, a method for a memory controller, a method for a processor, to a memory module controller device or apparatus, to a memory controller device or apparatus, to a processor device or apparatus, a memory module, a memory controller, a processor, a computer system and a computer program. The method for the memory module comprises obtaining one or more memory write instructions of a group memory write instruction. The group memory write instruction comprises a plurality of memory write instructions to be executed atomically. The one or more memory write instructions relate to one or more memory addresses associated with memory of the memory module. The method comprises executing the one or more memory write instructions using previously unallocated memory of the memory module. The method comprises obtaining a commit instruction for the group memory write instruction.

Abstract: An apparatus and method for machine check bank reporting in a processor. For example, one embodiment includes a processor comprising: one or more cores to execute instructions and process data; a plurality of machine check architecture banks to store errors detected during execution of the instructions; error monitoring circuitry to detect the errors and responsively update the MCA banks; and a first error register (FERR) into which a first error vector is to be stored to identify an MCA bank containing a first error in an error sequence, the error monitoring circuitry to update the first error vector responsive to detecting the first error; and one or more next error registers (NERRs) to store one or more error vectors to one or more other MCA banks containing subsequent errors occurring after the first error.

Abstract: A method includes compiling a workflow that is defined in a high-level flow language to generate a plurality of execution units that are executable so as to execute the workflow.

Abstract: A device and a method for managing electronic facilities of buildings. The device may include one or more interface elements for connecting the device to one or more electronic facilities of a building, a connection element for the connection of a portable storage device, and a control unit for reading files from the portable storage device, in which the reading of the files from the portable storage device is based on cryptography techniques, and in which the control unit is adapted to operate the electronic facilities by means of the interface elements on the basis of the result of the reading of the files from the portable storage device. The device according to the present disclosure enables a user to manage various types of electronic facilities of buildings simultaneously in a simple manner and by using a single portable storage device.

Abstract: A processing device receives a request to recreate an application from a particular point in time. The processing device determines a set of hierarchical tags in a data store of hierarchical tags, the set of hierarchical tags describes a computing environment hosting the application from the particular point in time. The processing device copies, from the data store, a snapshot associated with a source data tag of the set of hierarchical tags. The processing device recreates the computing environment hosting the application from the particular point in time in a replication environment using the set of hierarchical tags and the snapshot.

Abstract: A system may include a cloud-based virtual machine connected to multiple virtual hard drives and associated with a guest of a first datacenter. A recovery management server may, substantially simultaneously for each virtual hard drive, create an Infrastructure-as-a-Service snapshot of data on the virtual hard drive without utilizing an agent of the virtual machine. The recovery management server may also directly replicate the snapshot of data for each virtual hard drive at a second datacenter, which may be geographically remote from the first datacenter, without re-creating Input Output (“IO”) operations for each virtual hard drive via a log file. Upon an indication of failure of the first datacenter, the recovery management server may arrange to have each virtual hard drive's replicated snapshot of data be consumed by a recovery service for the guest at the second datacenter.

Abstract: This application generally relates to data processing methods and apparatus. One data processing method disclosed herein comprises: creating a Writable Snapshot based on data modification; creating a plurality of Read-Only (“RO”) Snapshots by cloning the Writable Snapshot at distinct predetermined creation-times; receiving a data inquiry request; and conducting the data inquiry through indexing, in a RO Snapshot with a latest creation-time. This approach achieves separation of data modification and data inquiry, enabling efficient real-time updating. Further, by fast indexing and invert indexing, inquiry efficiency is further improved. Additionally, data is stored in data columns, wherein each column may be divided into multiple data blocks according to a fixed block size, and each data block has a same length.

Abstract: Interfaces are provided for receiving software development kit runtime binaries configured for a standardized platform; receiving a driver framework package that is generated based on the software development kit and configured to enable extensibility under a set of constraints; and interacting with first party frameworks and allowing third party frameworks to access the software development kit runtime binaries and allow applications to use the third party frameworks.

Abstract: In various example embodiments, a system and method for transferring an authenticated session of an application running on one electronic device to a second electronic device after determining the second electronic device is a trusted device are presented. In one embodiment, an instruction is received to transfer an authenticated session of an application running on a first device associated with a user account to a second device associated with the user account. The second device is verified to be associated with the user account of the first device. The second device is determined to be a trusted device of an authorized user of the user account. The authenticated session of the application running on the first device is transferred to the second device to reproduce a current state of the authenticated session on the second device.

Abstract: A system allows smart backup and restore of databases. The system identifies a database affected by a database operation recorded by a database event record, identifies a database operation time recorded by the database event record, and requests to restore the database to a version backed up prior to the database operation time.

Abstract: Systems and methods are provided that may be implemented to prevent unexpected and/or uncontrollable system reboots that occur due to write filter overlay and/or RAM disk depletion within system memory of an information handling system by monitoring time-based write filter memory overlay and/or RAM disk usage. This information may be used to predict when the write filter memory overlay and/or RAM disk will fill up with data, and/or to take actions to prevent write filter memory overlay and/or RAM disk usage from reaching a threshold percentage or fractional utilization value that will trigger a system reboot. Those applications and/or data files that are primarily responsible for filling the memory of a write filter overlay may also be identified and stopped or restarted to prevent automatic system reboot due to write filter memory overlay usage.

Abstract: One or more storage locations of file inodes in a data source to be backed up are identified. Filesystem metadata information is extracted from the one or more identified storage locations. At least one item of the extracted filesystem metadata information includes a reference to a parent inode. The extracted filesystem metadata information is stored in a data structure. The contents of the data structure are analyzed to index a relationship structure of file system contents of the data source.